To me all of the remastered tracks sound about the same as the original releases when it comes to Ayu. Remastering recordings from the late 90s or 2000s won't provide much improvement. Most of the time remastering is about analogue and digital. Taking old recordings from the vinyl analogue era and giving them a new high quality 21st century digital remaster. But since the term "original master tapes" was used perhaps it is not a 100% digital recording and master. Maybe digital tape was used for the master? It's hard to know.
The best thing that they could do to her music is increase the dynamic range. But they have not done that on previous remasters so I don't have high hopes for this one.